Scout 23.1 contains many improvements for Scout JS developers. The goal was to make the development easier, more efficient and more fun. One major addition is the support of TypeScript.
Please see the full release notes for details: https://eclipsescout.github.io/23.1/release-notes.html
Also consult the migration guide for update instructions: https://eclipsescout.github.io/23.1/migration-guide.html